Update agent.py

agent.py

@@ -8,7 +8,7 @@ from langgraph.prebuilt import ToolNode
 from langgraph.graph import START, StateGraph
 from langgraph.prebuilt import tools_condition
 from langchain_huggingface import HuggingFaceEndpoint, ChatHuggingFace
-from langfuse.callback import CallbackHandler
+from langfuse.callback_handler import CallbackHandler
 
 from tools import ExtractTextFromImage, DescribeImage, TranscribeAudio, read_excel, read_python, wiki_search, web_search, arxiv_search, download_youtube_video, extract_audio_from_video